An arch has 2 identical sets of cuts (left and right sides). A bulls-eye (circle) has 4.
When the wall is core filled, the membrane (flashing) around the arch line stops the concrete. Remove off-cuts and extra blocks to reveal the arch.
Cut all the blocks before construction. The cut blocks (all halves) that form the arch are numbered sequentially, with off-cuts numbered identically.
Take the opening to spring height, then using a standard horizontal head support, go across the head, laying each cut in its place,
its matching off-cut on top, with a membrane (aluminum flashing is ideal) between the two.
Lay the cut, place the flashing on top of the cut line and lay the off-cut to lock membrane in place.
Use overlapping lengths of thick, strong (aluminum) flashing about 3 feet long so the flashing doesn't get in your way.
You can combine this Templateless Arch System with the Circular Wall System to easily build curved or circular (and raking) walls
with arches or bulls-eyes. It's easy! If you'd like more detailed info on this, please contact us.
If you're cutting blocks, concrete, stone or ANYTHING and there's DUST - DON'T TAKE THE RISK
Don't cut it, or cut it wet so there's NO DUST - Silicosis Sucks
How should we spell it?
What do we think? - They're 2 different things:
A Meter is a device to measure things - like a Volt Meter or a Parking Meter
A Metre is about 3'-3~3/8"
Although diameter and perimeter as measurements - don't seem to fit very well
If the US ever goes Metric, you'll be able to use a Meter to measure Meters - A Meter Meter
(And when we go back to the moon, let's go Metric, ay?)
All Inch (Imperial) inputs and dimensions are actual physical finished sizes(unless otherwise noted)
All Metric Inputs in Millimetres(unless otherwise noted)